JBL CS SERIES 50.4
CAR AMPLIFIER CONNECTION DIGRAM AND CIRCUIT DIAGRAM
APPLICATIONS
The CS subwoofer amplifier is a single-channel
amplifier. There are two sets of terminals to make it easy to connect multiple
woofers. Either set of (+/–) terminals may be used
when connecting woofers. To the right are two application diagrams to help plan your subwoofer system installation. FIG shows how to configure the CS200.1 subwoofer amplifier.
NOTE: For simplicity, Figures 2 and 3 do not show power, remote and input connections.
when connecting woofers. To the right are two application diagrams to help plan your subwoofer system installation. FIG shows how to configure the CS200.1 subwoofer amplifier.
NOTE: For simplicity, Figures 2 and 3 do not show power, remote and input connections.
NOTE: Minimum speaker load is 2 ohms total
CS subwoofer amplifier with two woofers connected.
The CS50.4 can be set up for stereo 4-channel,
3-channel or bridged 2-channel operation, as shown in FIG.
NOTE: For simplicity, Figures 4 through 6 do not show power, remote
and input connections.
NOTE: Minimum speaker impedance for stereo operation is 2 ohms.
Minimum speaker impedance for bridged operation is 4 ohms.
CS50.4 amplifier in 4-channel (stereo) operation to drive front
and rear full-range speakers
CS50.4 is set up for 3-channel operation to drive a set of
full-range speakers and a subwoofer.
CS50.4 used in bridged 2-channel mode to drive a set of
components or subwoofers. Set crossovers according to application.
CONTROLS AND SETUP
SETTING THE CROSSOVER
Determine your system plans and set the crossover mode switch accordingly. If your system design does not include a subwoofer with the CS50.4, set the crossover mode to FLAT and skip to “Setting Input Sensitivity.” Initially set the crossover frequency control midway. While listening to music, adjust the crossover for the least perceived distortion from the speakers, allowing them to reproduce as much bass as possible.
Systems using a separate subwoofer set the crossover mode to HP (high pass) for your full-range speakers. Adjust the crossover frequency to limit bass and provide increased system volume with less distortion.
For subwoofers, choose the highest frequency that removes vocal information from the sound of the subwoofer. If using the CS50.4 to drive a subwoofer(s), set the crossover mode to LP (low pass).
Determine your system plans and set the crossover mode switch accordingly. If your system design does not include a subwoofer with the CS50.4, set the crossover mode to FLAT and skip to “Setting Input Sensitivity.” Initially set the crossover frequency control midway. While listening to music, adjust the crossover for the least perceived distortion from the speakers, allowing them to reproduce as much bass as possible.
Systems using a separate subwoofer set the crossover mode to HP (high pass) for your full-range speakers. Adjust the crossover frequency to limit bass and provide increased system volume with less distortion.
For subwoofers, choose the highest frequency that removes vocal information from the sound of the subwoofer. If using the CS50.4 to drive a subwoofer(s), set the crossover mode to LP (low pass).
SETTING INPUT SENSITIVITY
1. Initially turn the INPUT LEVEL control(s) to minimum (counter clockwise).
2. Reconnect the (–) negative lead to the vehicle’s battery. Apply power to the audio system and play a dynamic music track.
3. On the source unit, increase the volume control to 3/4 volume. Slowly increase the INPUT LEVEL control(s) toward three o’clock until you hear slight distortion in the music. Then reduce the INPUT LEVEL slightly until distortion is no longer heard.
NOTE: After the source unit is on, blue LEDs (on the top panel) will light, indicating the amplifier is on. If not, check the wiring, especially the remote connection from the source unit.
1. Initially turn the INPUT LEVEL control(s) to minimum (counter clockwise).
2. Reconnect the (–) negative lead to the vehicle’s battery. Apply power to the audio system and play a dynamic music track.
3. On the source unit, increase the volume control to 3/4 volume. Slowly increase the INPUT LEVEL control(s) toward three o’clock until you hear slight distortion in the music. Then reduce the INPUT LEVEL slightly until distortion is no longer heard.
NOTE: After the source unit is on, blue LEDs (on the top panel) will light, indicating the amplifier is on. If not, check the wiring, especially the remote connection from the source unit.
TROUBLESHOOTING
No audio (POWER LEDs are off)
No voltage at BATT+ or REM terminals,
connection or bad or no ground Amplifier is overheated. Voltage more than 16V
or less than 8.5V on BATT+ connection
or less than 8.5V on BATT+ connection
Check voltages at amplifier terminals with VOM
Make sure amplifier cooling is not blocked at mounting location; verify
speaker-system impedance is within specified limits Check vehicle charging
system.
No audio (POWER LEDs flash)
Voltage less than 9V on BATT+ connection DC
voltage on amplifier output
Check vehicle charging system Amplifier may need service.
Check vehicle charging system Amplifier may need service.
Distorted audio
Input sensitivity is not set properly, or
amplifier or source unit is defective.
Check INPUT LEVEL setting; or check speaker
wires for shorts or grounds
Distorted audio and POWER LEDs flash
Short circuit in speaker or wire.
Remove speaker leads one at a time to locate
shorted speaker or wire, then repair
CIRCUIT DIAGRAM
ONLY ONE CHANNEL IS SHOWN
PRE STAGE
POWER AMP
POWER SUPPLY INVERTER
CLICK ON THE IMAGES TO ZOOM IN
